Home / 83,715.52-115,414.56-71,727.04

Finding the Fourth Proportional to 83,715.52, 115,414.56 and 71,727.04

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Solution

The fourth proportional to 83,715.52, 115,414.56 and 71,727.04 is: 98,886.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,715.52 : 115,414.56 = 71,727.04 : x
  2. Step 2: Convert to fraction form
    83,715.52/115,414.56 = 71,727.04/x
  3. Step 3: Cross multiply
    83,715.52x = 115,414.56 × 71,727.04
  4. Step 4: Simplify right side
    83,715.52x = 8,278,344,761.70
  5. Step 5: Solve for x
    x = 8,278,344,761.70/83,715.52
  6. Step 6: Final answer
    x = 98,886.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.